Final answer:
A blackhead is another term for comedo, a type of acne that occurs when the hair follicles on our skin get clogged with oil, dirt, and dead skin cells.
Step-by-step explanation:
A blackhead is another term for comedo. It is a type of acne that occurs when the hair follicles on our skin get clogged with oil, dirt, and dead skin cells. The clogged pore remains open at the surface and turns black due to oxidation, giving it the appearance of a blackhead.
Learn more about blackhead